When To Replace A Steam Radiator Valve

What do you know about steam radiator valves? When do you have to replace it, and when can you fix it?
This video shows the insides of an 82 year old steam radiator valve. We see what is broken, and why it leaks, and what we can do about it.
I cut one of them in half and i also upload this video in 4K high quality. You can see the details very well.

Видео When To Replace A Steam Radiator Valve канала mygiguser